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ECWAY TECHNOLOGIES 
IEEE PROJECTS & SOFTWARE DEVELOPMENTS 
OUR OFFICES @ CHENNAI / TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORE 
BANGALORE / HYDRABAD 
CELL: 9894917187 | 875487 1111/2222/3333 | 8754872111 / 3111 / 4111 / 5111 / 6111 
Visit: www.ecwayprojects.com Mail to: ecwaytechnologies@gmail.com 
RECONFIGURABLE CORDIC-BASED LOW-POWER DCT ARCHITECTURE BASED 
ON DATA PRIORITY 
ABSTRACT: 
This paper presents a low-power coordinate rotation digital computer (CORDIC)-based 
reconfigurable discrete cosine transform (DCT) architecture. The main idea of this paper is based 
on the interesting fact that all the computations in DCT are not equally important in generating 
the frequency domain outputs. Considering the importance difference in the DCT coefficients, 
the number of CORDIC iterations can be dynamically changed to efficiently tradeoff image 
quality for power consumption. Thus, the computational energy can be significantly reduced 
without seriously compromising the image quality. The proposed CORDIC-based 2-D DCT 
architecture is implemented using 0.13 μm CMOS process, and the experimental results show 
that our reconfigurable DCT achieves power savings ranging from 22.9% to 52.2% over the 
CORDIC-based Loeffler DCT at the cost of minor image quality degradations.

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Reconfigurable cordic based low-power dct architecture based on data priority

  • 1. ECWAY TECHNOLOGIES IEEE PROJECTS & SOFTWARE DEVELOPMENTS OUR OFFICES @ CHENNAI / TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORE BANGALORE / HYDRABAD CELL: 9894917187 | 875487 1111/2222/3333 | 8754872111 / 3111 / 4111 / 5111 / 6111 Visit: www.ecwayprojects.com Mail to: ecwaytechnologies@gmail.com RECONFIGURABLE CORDIC-BASED LOW-POWER DCT ARCHITECTURE BASED ON DATA PRIORITY ABSTRACT: This paper presents a low-power coordinate rotation digital computer (CORDIC)-based reconfigurable discrete cosine transform (DCT) architecture. The main idea of this paper is based on the interesting fact that all the computations in DCT are not equally important in generating the frequency domain outputs. Considering the importance difference in the DCT coefficients, the number of CORDIC iterations can be dynamically changed to efficiently tradeoff image quality for power consumption. Thus, the computational energy can be significantly reduced without seriously compromising the image quality. The proposed CORDIC-based 2-D DCT architecture is implemented using 0.13 μm CMOS process, and the experimental results show that our reconfigurable DCT achieves power savings ranging from 22.9% to 52.2% over the CORDIC-based Loeffler DCT at the cost of minor image quality degradations.